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Bentonite

What it does :

Bentonite is used to clarify and chillproof beer. It is also used in winemaking.

What it is:

This is a non-organic material combined with a form of powdered clay.

How it works:

Bentonite causes colloidal material such as phenols, haze-causing proteins, and tannins, to drop out of solution in the beer before bottling or kegging.

Mechanism:

This clay-like material electrostatically attracts proteins and color-altering tannin complexes from the beer via adsorption and coagulation.

Dosage:

Add 4 teaspoons per 5 gallons. Add to secondary fermentation 1 week before bottling.

Drawbacks:

Use of Bentonite produces a lot of sediment.

Preparation:

Dissolve 4 teaspoons in 0.5 cup of boiled water, cool, add to the fermenter, and mix thoroughly.

Related Links

Water Treatment
Volume Conversion
Weight Conversion
Bentonite